#include <stdio.h>
int main()
{
char ch = 'a';
start: //label
printf("%c %d\n",ch, ch);
ch++;
if (ch <= 'z')
goto start;
return 0;
}
/*
run:
a 97
b 98
c 99
d 100
e 101
f 102
g 103
h 104
i 105
j 106
k 107
l 108
m 109
n 110
o 111
p 112
q 113
r 114
s 115
t 116
u 117
v 118
w 119
x 120
y 121
z 122
*/